Amino Acids


Actions/Claims:

Amino acid supplements are commonly used for building muscle. Arginine and ornithine are two amino acids that are promoted for stimulating the release of growth hormone and/or insulin. The extra boost of growth hormone and/or insulin is then supposed to encourage muscle building.

Research Results:

Well-controlled clinical studies do not support these benefits.

Cautions:

High doses of ornithine (12 grams) may cause cramping and diarrhea.

Return to Supplement Guide

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